A car is moving with a speed of 12 km/hr and another identical car is moving with a speed of 48 km/hr. Compare their kinetic energy.
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Answer:
KE for 1st car
1/2×m×v²=1/2×m×144=72m
KE for 2nd car
1/2×m×2304=1152m
now the ratio of the two car KE will be
72:1152=1:16
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